Refractories projector



W. H. BLATCHLEY. REFRACTORIES PROJECTOR. APPLICATION FILED MAY 4. 1021.

1,435,201, Patented Nov. 14, 1922.

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WITNESSE S INVENTOR mam - ATTORNEYS Patented Nov. li, i922.

" stares vvritnrera 1r. BLATCHLEY, or rrrrssunGI-I, PENNSYLVANIA;

REFRACTORIES PROJECTOR.

Application filed May 4,

. To aZZ whom it may concern:

' Be it known 'that l, WILLIAM H. BLA'roH-.

may, a citizen of the [United States, and a lowing is a specification.

This invention relates to apparatus for projecting material into a furnace. More particularly it relates to power driven means for throwing granular refractory material to the "back of open hearth steel furnaces, for building up such bottoms or repairing them. More specifically still, it relates to the supporting and guiding means for receptacles used with such power driven projecting apparatus,-whereby to secure a varying inclination of the bottom and forward end of the receptacle. 1 1

' The 'objectsof the invention are to provide in apparatus of the class describedan open topped, open front receptacle adapted to receive from an overhead charging apparatus a predetermined quantity'of granular refractory material, delivered ordinarily by gravity. In order to receive and retain such a charge the receptacle must be wide and open at the top, and must be so arranged as to walls that the material will not flow out at the end, when first delivered, or slide over the back wall when the receptacle is suddenly projected forward in order to throw the material into the furnace. On the other hand, it is necessary that the front end of the receptacle be entirely unrestrict ed at the end of the projecting stroke, in order that the mass of granular refractory material may readily slide out of the re tainer and be projected in a comparatively compact mass into the furnace. If this resuit is not attained the charge will be broken up, will not travel sufficiently far for the purpose desired, and in addition a large amount of dust will be produced, which rises and settles in and clogs up the checker work of the furnace recuperator. This is objectionable to the workmen, and wastes the material. In my copending application Serial No. 455,047 filed March 24, 1921, I

have illustrated and described a machine for receiving and projecting granular refractory materials into furnaces. The resent invention rel-ates to the particular orm of mountingand guiding members for the refractory-carrying member of such a ma 1921. Serial No. 466,649.

cl lne. Consequently, Ishall not in this aplication illustrate and describe the operatng parts ofsuch a machine, other than those incident to the particular invention here involved, reference being made to the said application for the details of construction and operating apparatus not peculiar to this invention.

Referring to the drawings Fig. l is a plan view of a form of apparatus embodying the present invention; Fig. 2 is a side elevation thereof; and Fig. 3 is a section on the line III-III of Fig. 2.

It will be understood that inthe class of machines to-which this invention relates that a'suitable storage hopperfor the magnesite' or dolomite refractory which is to be projected into a furnace is provided above the receptacle which is to throw the material into the furnace. It will also be understood that suitablepower driven'ap paratus is provided for causing. the receptacle to move forward quickly a certain distance in'order to project the refractory material into the furnace. In the present. case the power referred to is applied by any suitable means, such as a steam cylinder. through a shaft 1, which is connected to a cross head 2, the ends of which. are attached to frame members 3. These frame members have three extensions, the upper and lower ones of which carry pins 4-. and 5 respectively, which in turn carry rollers 6 and 7 respectively. These rollers are flanged, and they ride upon upper and lower track members 8 and 9, respectively. These tracks are mounted in channel irons l0 and 11, which form a runway and guide for the receptacle 12, which is adapted to receive and retain the granular refractory material until it is projected into the furnace.

The forward extension 15 from the castings 3 are connected by means of pivot pins 16 to side members 18, fastened to the sides 0 30 of the receptacle 12. At their forward end the members 18 carry upper and lower rollers 20 and 21 respectively. These rollers are similar in all respects to the rollers 6 and 7 above referred to. and engage the tracks 8 and 9., exactly as illustrated in Fig. 3. The side members 18 are fastened onto the sides of the receptacle 12, and support it.

The receptacle 12 comprises side walls 30,

and a rear wall 31, which has an air release shield 32, as more fully described in my above mentioned co-pending application.

- ward open end.

The receptacle 12 is shown in withdrawn position in Figs. 1 and 2. That is to say, in position to receive a charge of granular refractory material from the storage hopper. It will be observed that the rear wall 31 is practically vertical, and that the bottoni'of the receptacle inclines from the forward open end to this rear vertical wall. Consequently, the tendency is to receive and hold a charge of'granular refractory material without danger-of its flowing outthe for- When power is applied to drive the receptacle forward, for the purposeof projecting refractory material into the furnace, the rollers 6, 7, 20 and 21 follow the guides S and 9, travel forward horizontally for a short distance and then follow the curved tracks, as illustrated in Fig. 2. The forward'endof the receptacle is'thus turned quickly downward, sothat at the end of the projecting stroke the bottom is inclined forwardly instead of rearv'vardly.

The forward movement of the receptacle coming to a sudden; and cushioned end, as will be understood, the charge of granular m'aterialis projected forward in a 'unitary mass, and "isi'entirely unobstructed in its passage out of the receptacle into the furnace. a By this mechanism, the receptacle is tilted backwardly to receive the charge of granular material, is held in this position when the receptacle receives its initial forward 1mtravel the front end of the receptacle is turned down so'that't-he material may freely esca e therefrom without any obstruction tendingtobreak up the mass of granular refractory.

I claim 1. A power driven device for projecting granular refractories into furnaces, comprising-a normally rear'wardly tilted receptacle for receiving and holdingthe refractory material, a aguideway comprising inclined tracks, projections'attached to the receptacle and engagingsai-d guideway, the guideway being inclined downward" at its outer end whereby to.-give the receptacle a forward tilt at theend of its forward travel.

2 A power driven device for projecting granular refractories into furnaces, comprising an open receptacle for receiving and projecting the refractory material, a support for saicl"recep'tacle normally holding it with its bottom-inclined towards the rear wall thereof,- and aguideway governing the for ward travel of the receptacle and adapted to tiltthe forwardend of it downward at the end of the projectingstroke. I

In testimonywhereof, I- havehe'reunto set my "hand. j

"VSTILLIAM'H. BLATCHLEY.

Witness:

EDWIN O. JOHNS. 

